The Washer,concave, cataloged under National Stock Number 5310-00-230-7066, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Monadnock Company, the Dba Lisi Aerospace. Government technical data includes 13 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-230-7066 |
| Primary Part Number | 942006-3 |
| Item Name | Washer,concave |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Monadnock Company, the Dba Lisi Aerospace |
| Status | ACTIVE |
| Surface Finish | 32.0 MICROINCHES TOP |
| Surface Treatment Document and Classification | AMS 2416 ASSN STD 1ST TREATMENT RESPONSE AND AMS 2416 ASSN STD 2ND TREATMENT RESPONSE OVERALL |
| Radius | 0.360 INCHES MINIMUM AND 0.390 INCHES MAXIMUM IN |
| Hardness Rating | 52.0 ROCKWELL C MINIMUM AND 56.0 ROCKWELL C MAXIMUM |
| Style Designator | CONCAVE |
| Material Document and Classification | AMS 6487 ASSN STD 1ST MATERIAL RESPONSE OR MIL-S-6049 MIL SPEC 2ND MATERIAL RESPONSE OR MIL-S-6758 MIL SPEC 3RD MATERIAL RESPONSE OR MIL-S-18729 MIL SPEC 3RD MATERIAL RESPONSE OVERALL |
| Outside Diameter | 0.455 INCHES MINIMUM AND 0.465 INCHES MAXIMUM IN |
| Material Thickness | 0.065 INCHES NOMINAL IN |
| Specification/standard Data | 81205-BACW10CA MANUFACTURERS STANDARD |
| Recess Diameter | 0.455 INCHES MINIMUM AND 0.465 INCHES MAXIMUM IN |
| Surface Treatment | NICKEL AND CADMIUM OVERALL |
| Material | STEEL COMP H11 OR STEEL COMP 8740 OR STEEL COMP 4130 OVERALL |
| Hole Diameter | 0.295 INCHES MINIMUM AND 0.305 INCHES MAXIMUM IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 942006-3 PRIMARY | Monadnock Company, the Dba Lisi Aerospace (USA) |
| K29913-3S PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| Reference | Meaning |
|---|---|
| BACW10CA3CCS | 3/2 Design control — primary reference U.S. Government activity |
| 70189-3S | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
| BACW10CA3CCS | 7/2 Vendor item drawing reference U.S. Government activity |
NSN 5310-00-230-7066 is a Washer,concave, manufactured by Monadnock Company, the Dba Lisi Aerospace, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-230-7066 has 2 manufacturer part numbers on file: 942006-3 (Monadnock Company, the Dba Lisi Aerospace), K29913-3S (Howmet Global Fastening Systems Inc).
Key specifications for 942006-3: Surface Finish: 32.0 MICROINCHES TOP; Surface Treatment Document and Classification: AMS 2416 ASSN STD 1ST TREATMENT RESPONSE AND AMS 2416 ASSN STD 2ND TREATMENT RESPONSE OVERALL; Radius: 0.360 INCHES MINIMUM AND 0.390 INCHES MAXIMUM IN; Hardness Rating: 52.0 ROCKWELL C MINIMUM AND 56.0 ROCKWELL C MAXIMUM. 13 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.